Tree stand



FIG. 1 is an upper perspective view of a tree stand embodying my new design;

FIG. 2 is a lower perspective view of the tree stand;

FIG. 3 is a top view of the tree stand;

FIG. 4 is a bottom view of the tree stand;

FIG. 5 is a front elevational view of the tree stand;

FIG. 6 is a rear elevational view of the tree stand;

FIG. 7 is a left side view of the tree stand, the right side view being a mirror image thereof; and,

FIG. 8 is a partial cross sectional view of the tree stand taken along line 8-8 of FIG. 5. 

CLAIM The ornamental design for a tree stand, as shown and described. 